25711011 has 6 divisors (see below), whose sum is σ = 37138140. Its totient is φ = 17140668.

The previous prime is 25711001. The next prime is 25711019. The reversal of 25711011 is 11011752.

It is a happy number.

25711011 is nontrivially palindromic in base 7.

It is not a de Polignac number, because 25711011 - 2⁹ = 25710499 is a prime.

It is a super-2 number, since 2×25711011² = 1322112173284242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25711019) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1428381 + ... + 1428398.

It is an arithmetic number, because the mean of its divisors is an integer number (6189690).

Almost surely, 2^25711011 is an apocalyptic number.

25711011 is a deficient number, since it is larger than the sum of its proper divisors (11427129).

25711011 is a wasteful number, since it uses less digits than its factorization.

25711011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2856785 (or 2856782 counting only the distinct ones).

The product of its (nonzero) digits is 70, while the sum is 18.

The square root of 25711011 is about 5070.6026269074. The cubic root of 25711011 is about 295.1479139491.

Adding to 25711011 its reverse (11011752), we get a palindrome (36722763).

The spelling of 25711011 in words is "twenty-five million, seven hundred eleven thousand, eleven".